What about one of these?
https://www.amazon.com/dp/B07DWLS7DP
$11.38, and provides four ports. If that's not enough, you could do a
bi-level multiplex arrangement; 5 of these ($56.90) would provide 16
ports.
Mark,
Thanks. This would be a good solution if everything was in the same general area. Plus as
part of this project I want to get the devices "on the LAN" which is actually
the easy part. I can wire the hosts up to readily available console/terminal servers and
they can be accessed from any device with telnet capability (e.g. my mobile phone on the
road using VPN). The "fun" part for me was to get an old style dumb terminal to
work with the setup hence my original question. That way I could have the dumb terminal on
my desk or somewhere convenient and show it off connecting to the different hosts.
-Ali